Installation Guide
70
TRANSCEND RAILING
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
Measuring and Cutting Rails
4.   Measure from corner-to-corner between posts. Mark 
45° cuts on rails with template on assembly tool. 
Center of “V’s” is the distance from corner-to-corner 
for posts.
NOTE: Subtract 1/16" (1.6 mm) from each end to 
accommodate rail gaskets.
Attaching Top and 
Bottom RSBs
5.  Attach RSBs with 
adapters to posts with 
wood screws (provided).
N
OTES: 
» Drill at slight inward angle 
to drill holes on marks.
» Lay cut lower rail into 
position on decking 
surface between the posts 
before attaching the lower RSB. There may be some 
diffi culty attaching the lower rail if you fail to do this.
Installing Railings to 
RSB's
6.   Attach with self-tapping 
screws (provided).
   Using Miter Box Saw to Cut Rails
 1.  Place 2" x 4" (51 mm x 
102 mm) on edge behind 
the rail to allow for 
complete cut.
  2.  Angle blade to 45°.
  3.   Set stop on saw so blade 
travels half the depth of 
rails. Several test cuts 
can be made on scrap 
material to accurately 
set the stop.
  4. “V” cut both sides of the rail.
NOTE: Transcend's Crown and Universal Rails will require 
different stop settings.
4
5
6
 Usin
g
 Miter Box Saw to Cut Rails
1. Pla
ce
2
"
 x 4
"
(
51 mm x
102 mm
)
 on edge behind 
t
h
e
 rail t
o
 all
o
w 
fo
r
com
p
lete cut
.
2.  Angle blade to 45°
.
3.  Set sto
p
 on saw so blade 
t
ravels hal
f
 the de
p
th o
f
r
ails. 
S
everal test cuts 
can be made on scra
p
m
aterial to accurately 
set the sto
p
.
4. “V” 
cu
t b
o
th sid
e
s 
of
 th
e
 rail.
N
O
TE
:
 Transcend's 
C
rown and Universal Rails will require 
different stop settings.
2" x 4"
(5.1 cm x 10.2 mm)
2" x 4"
(51 mm x 102 mm)
1
2a
HOW TO INSTALL CROWN AND UNIVERSAL STAIR RAILING
TREX TRANSCEND
HOW TO INSTALL CROWN AND UNIVERSAL BIRD'S MOUTH 
RAILING/
CONTINUED
TREX TRANSCEND
Read all instructions BEFORE installation.
NOTE: All Transcend railings and gaskets work ONLY 
WITH STAIR SLOPES OF 32°-37°.
Installing Posts, Post 
Sleeve Skirts, and Post 
Sleeves for Stair Rails
1.   Install posts, post sleeve 
skirts, and post sleeves 
according to standard 
Transcend railing 
instructions. 
See page 59.
»   In most cases, a post and post sleeve longer than 
39" (991 mm) will be needed on the lower section of 
stair rail to accommodate stair angle.
»   Make sure top and bottom posts for stairs are 
installed at nose of each tread. 
Measuring and Cutting 
Railings
2a. Snap baluster spacers 
into top and bottom 
railings, ensuring the 
baluster spacer holes 
line up parallel.










